Overview
The ZF 0630.004.070 SHIM RING is a precision-engineered adjustment component designed for the WG 150 Series and WG 65 Series transmissions. This OEM genuine part functions as a critical axial spacer within the planetary gearset assembly, ensuring correct preload and alignment between rotating elements. By maintaining exact tolerances, the shim ring prevents metal-to-metal contact and distributes load evenly across gear faces. The SKU 0630.004.070 is manufactured to ZF’s original specifications, guaranteeing a direct fit without modification. When installed alongside a TRANSMISSION HOUSING, this shim ring stabilizes the entire gear train, reducing vibration and extending service intervals.
Symptoms of Failure
- Transmission gear slipping under load: A worn shim ring allows excessive axial play, causing gears to lose engagement during acceleration or hill climbing.
- Metallic grinding noise from the gearbox: When the shim ring thickness degrades, hardened steel components contact each other, producing a distinct scraping sound during operation.
- Oil contamination with metallic particles: As the shim ring wears, microscopic steel fragments enter the transmission fluid, visible during routine oil changes or filter inspections.
- Intermittent hard shifting: Incorrect preload from a collapsed shim ring creates inconsistent clutch pack clearance, leading to delayed or abrupt gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.004.070 |
| Inner Diameter | 70.0 mm |
| Outer Diameter | 85.0 mm |
| Thickness | 1.50 mm |
| Material | Hardened Spring Steel (C67S) |
| Weight | 0.012 kg |
| OEM Reference | ZF 0630.004.070 |
| Surface Finish | Phosphate-coated |
Compatibility
This shim ring is engineered for the ZF WG series of powershift transmissions. Primary applications include the WG 65 Series and WG 150 Series gearboxes commonly found in heavy-duty construction equipment, agricultural tractors, and material handlers. It also fits select variants of the WG 180 and WG 200 models where planetary gearset shimming is required. Always verify the stack height using the original service manual. For secure installation, pair this shim ring with HEXAGON SCREW (0636011038), HEXAGON SCREW (0636011118), and HEXAGON SCREW (0636016015) to ensure proper clamping force on the housing assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011038 | HEXAGON SCREW | Fastener for housing cover |
| 0636011118 | HEXAGON SCREW | Bolt for planetary carrier |
| 0636016015 | HEXAGON SCREW | Mounting screw for valve body |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Seal for hydraulic passage |
| 0636304019 | SCREW PLUG | Port closure for pressure testing |
| 0634801152 | SEALING RING | Static seal for flange joint |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Dynamic seal for piston bore |
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